Can you cheat in a two player online game?

[Erle]

I just played a player that conviently blocked almost all my routes without me telegraphing them. And it's not like I was going to New York. I was going to secondary cities like Montreal and Sault Ste. Marie. I had not even come close to those cities yet and he blocked almost every route to them like he know what cards I had. Then I pick up New York to Miami and he immediately blocks the last remaining route into New York. Is it possible he was using a trainer that can see my cards?

[cazaron]

Um... I won't say it's impossible, cause I'm not familiar on cheater's ways, but I can safely say that I don't think I've ever seen someone noticeably cheat... Can you give a screenshot?
Sometimes what looks like cheating is just quick-recognition-impulse-blocking, that is, if you really quickly work out what ticket they have (there's only 30, after all), you can block those cities, forcing your opponent to either react quickly or lose.
Blocking is a viable strategy, but it comes with a big risk and a big price.

[EricB@DoW]

As you probably noticed, there is an Observe tab in the Restaurant's book. Using that tab, you can observe games that others are playing. Some-one could cheat with a friend observing the game and tell her what cards were drawn by the opponents.

When you create a game, you can choose to make it observable or not. And even if you make it observable, you can choose that the cards drawn will be hidden from the observers, so they cannot cheat.